WO2008120879A1 - Lcd module with color-light-emitting frame - Google Patents

Lcd module with color-light-emitting frame Download PDF

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Publication number
WO2008120879A1
WO2008120879A1 PCT/KR2008/001527 KR2008001527W WO2008120879A1 WO 2008120879 A1 WO2008120879 A1 WO 2008120879A1 KR 2008001527 W KR2008001527 W KR 2008001527W WO 2008120879 A1 WO2008120879 A1 WO 2008120879A1
Authority
WO
WIPO (PCT)
Prior art keywords
liquid crystal
crystal display
transparent
transparent plate
frame
Prior art date
Application number
PCT/KR2008/001527
Other languages
French (fr)
Inventor
Ni Na You
Original Assignee
Ni Na You
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ni Na You filed Critical Ni Na You
Publication of WO2008120879A1 publication Critical patent/WO2008120879A1/en

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
    • F21V33/0004—Personal or domestic articles
    • F21V33/0052—Audio or video equipment, e.g. televisions, telephones, cameras or computers; Remote control devices therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133512—Light shielding layers, e.g. black matrix
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side

Definitions

  • the present invention relates to a liquid crystal display (LCD) module that is used as a display for a computer monitor, a television, a mobile phone, a navigator, a PMP, a PDP, a PSP and the like. More particularly, the present invention relates to an LCD module including a direct view chromatic light emitting frame, which has various shapes and colors, and is provided around the perimeter of the LCD module, with a color pattern printed on the frame, so that a user can selectively use a display having a desirable edge color according to his/her preference, in which the entire outer portion of the LCD panel brightens when the frame emits light, thereby improving the saturation and brightness of the color pattern, in which the color of the color pattern mixes with the color of light from light emitting means, thereby realizing a new color, and which provides an attractive mood lamp funct ion at night .
  • LCD liquid crystal display
  • LCDs are widely used in computer monitors, televisions and mobile phone displays.
  • An LCD is a flat panel display that, unlike conventionally used cathode ray tubes (CRTs), converts various electronic data from various devices into visual data by changing the reflectivity of liquid crystal cells in response to an applied electric field.
  • Such an LCD requires a backlight unit since it does not produce light of its own.
  • LCDs are widely used owing to merits such as low power consumption and good portability.
  • the LCDs are generally divided into a super-twisted nematic LCD (STN- LCD), a thin film transistor LCD (TFT-LCD), an ultra fine and bright LCD (UFB-LCD), a thin film diode LCD (TFD-LCD), an organic electro-luminescent (EL) display and so on.
  • STN- LCD super-twisted nematic LCD
  • TFT-LCD thin film transistor LCD
  • UFB-LCD ultra fine and bright LCD
  • TFT-LCD thin film diode LCD
  • EL organic electro-luminescent
  • the TFT-LCD is generally known to be the most widely used.
  • the TFD-LCD includes a lower glass panel on which thin film transistors and pixel electrodes are arrayed, an upper glass panel on which color filters for expressing colors and common electrodes are arrayed, liquid crystal cells sandwiched between the upper and lower glass panels, and polarizers attached to the faces of the glass panels, the polarizers linearly polarizing natural light (visual light).
  • the TFT-LCD also includes TFTs, as switching devices, capacitors and auxiliary capacitors, formed by the liquid crystal cells sandwiched between the upper and lower panel electrodes, gate electrodes controlling on/off operations of the TFTs and image signal electrodes.
  • image information is stored in the above-mentioned two types of capacitors.
  • the TFT-LCD produces a desired image according to the following procedures: A voltage is applied to a TFT gate of a pixel using an outer peripheral circuit, thereby turning on a transistor, so that an image voltage can be inputted into a liquid crystal cell, and then the image voltage is applied to the liquid crystal cell to store image information. Next, the transistor is turned off, enabling charges stored in a liquid crystal capacitor and an auxiliary capacitor to be maintained, so that a visual image is displayed for a predetermined time period. Then, a voltage is applied to the liquid crystal cell to change the orientation thereof, and light passes through and is diffracted by the liquid crystal cell, the orientation of which has changed. Finally, diffracted light is made to pass through a polarizer, thereby producing the desired image.
  • the market size has rapidly expanded since the 1990s, when LCDs were first used, and now LCDs are widely used in various industrial fields.
  • an LCD module using this type of LCD is used in a computer monitor, a television, or a mobile phone display.
  • a description will be made of a conventional LCD module, which is housed in a chassis or an outer case 100.
  • the LCD module includes a light guide plate 102 having a backlight lamp 101, a reflection sheet 103 and a diffusion sheet 104 attached to both faces of the light guide plate 102, and an LCD panel 106 placed in front of the diffusion sheet 104, the LCD panel 106 having a drive circuit unit 105.
  • the outer case 100 finishing the contour of the LCD module, is formed by injection molding synthetic resin or extruding metal.
  • a separate protective sheet 107 is mounted on the front face of the LCD panel 106, and is closely attached to the inner portion of the outer case 100.
  • the LCD panel 106 outputs an external signal, which is inputted into the drive circuit unit 105.
  • the LCD module outputs various colors due to the reflection of light by the reflection sheet 103 and the diffusion and distribution of light by the diffusion sheet 104, thereby expressing a desired image.
  • the case finishing the edges is made of synthetic resin.
  • the case is formed by molding synthetic resin along the contour of the LCD module into a box-shaped configuration.
  • a product having this type of LCD module is not inconvenient to use during the daytime.
  • the high brightness of the LCD panel causes the surrounding areas to look darker.
  • a great difference in the brightness between the surroundings and the LCD panel also has a significantly adverse effect on the vision of a user or a viewer.
  • the LCD module of the present invention includes, in the front portion thereof, a transparent plate having various end shapes and an increased width.
  • a shielding pattern and a transparent frame are provided in the rear of the transparent plate so as not to interfere with an LCD panel.
  • a separate light emitting means, which faces outside, is provided inside the transparent frame, and a color pattern is printed on the rear face of the transparent frame.
  • the transparent plate protects the surface of the LCD module, and the transparent frame on the rear edges of the transparent plate provides a transparent portion having various colors in the outer portion of the LCD module, so that a user can selectively use a preferable color.
  • the light emitting means When the light emitting means is turned on, light from the light emitting means projects forwards through the transparent frame, thereby providing a more beautiful and elegant outer appearance.
  • the LCD module of the present invention can also be used as a mood lamp radiating attractive light.
  • the present invention makes it possible to break from conventional cases having a monotonous design and color in order to credibly satisfy various demands of consumers. Accordingly, a high rate of production can be achieved, and thus excellent competitiveness can be ensured. [Description of Drawings]
  • FIG. 1 is a cross-sectional view illustrating the overall structure of a conventional LCD module
  • FIG. 2 is an exploded perspective view illustrating an LCD module according to the present invention.
  • FIG. 3 is a cross-sectional view illustrating the overall structure of the LCD module according to the present invention.
  • FIG. 4 is an enlarged view of the cross section of the LCD module according to the present invention.
  • FIG. 5 is a view illustrating another embodiment of the LCD module according to the present invention.
  • FIG. 6 is a view illustrating a further embodiment of the LCD module according to the present invention.
  • FIG. 7 is a view illustrating a monitor having a monochromatic light emitting frame, as an example to which the LCD module of the present invention is applied;
  • FIG. 8 is a view illustrating a monitor having a polychromatic light emitting frame, as an example to which the LCD module of the present invention is applied;
  • FIG. 9 is a view illustrating a monitor having a light emitting frame in which a color pattern and a transparent portion are mixed, as an example to which the LCD module of the present invention is applied.
  • FIG. 10 is a view illustrating a monitor having a horizontal polychromatic light emitting frame as an example to which the LCD module of the present invention is applied.
  • diffusion sheet 14 drive circuit unit
  • LCD panel 16 color filter
  • FIG. 2 is an exploded perspective view illustrating an LCD module according to the present invention
  • FIG. 3 is a cross-sectional view illustrating the overall structure of the LCD module according to the present invent ion.
  • a separate transparent plate 1 extends beyond the circumference of an LCD panel 15 having drive circuit units 14, and light emitting means 6 is provided on the rear face of the transparent plate 1 to generate light when turned on, so that light from the light emitting means 6 projects to the front of the transparent plate 1.
  • a light guide plate 11 having backlight lamps 10 is provided, and a reflection sheet 12 and a diffusion sheet 13 are provided on both sides of the light guide plate 11.
  • the transparent plate 1 is closely attached to the entire front face of the LCD panel 15, and a transparent frame 2 is provided on the rear circumference of the transparent plate 1 and is spaced apart from the LCD panel 15.
  • a shielding pattern 3 is printed on the rear face of the transparent plate 1, between the outer lateral face of the LCD panel 15 and the inner lateral face of the transparent frame 2, in order to conceal the drive circuit units 14 and the light emitting means 6.
  • the shielding pattern 3 is formed, for example, by applying a mirror layer made of platinum (Pt) or attaching a sheet printed with an opaque material.
  • a color pattern 4 is formed on the rear face of the transparent frame 2.
  • the color pattern 4 is formed by applying colored ink on the transparent frame 2 or attaching a colored sheet to the surface of the transparent frame 2.
  • a diffusion filter 5 and a color filter 16 are separately or sequentially attached to the inner lateral face of the transparent frame 2.
  • the light emitting means 6 includes LEDs 18, attached to the surface of a support block 17 on the rear face of the transparent plate 1, in which each of the LEDs 18 has a light emitting portion facing the outside of the LCD panel 15. Ornamental moldings 19 are coupled, as finishing members, to side and rear portions of the transparent plate 1.
  • the panel-type transparent plate 1 made of a transparent material is provided in front of the LCD panel 15, which has the drive circuit units 14 on both sides.
  • the central portion of the transparent plate 1 allows an image from the LCD panel 15 to pass therethrough, and an opaque portion is provided on a portion of the transparent plate 1 corresponding to the circumference of the LCD panel 15 in order to shield the drive circuit units 14 and the light emitting means 6 therein.
  • a transparent portion is also formed in the outermost portion of the transparent plate 1, so that light from the light emitting means 6 therein passes through the transparent portion to the front.
  • the light guide plate 11 which has the reflection sheet 12 and the diffusion sheet 13 on both sides thereof, is provided on the rear face of the LCD panel 15.
  • the backlight lamps 10 on one side or both sides of the light guide plate 11 are turned on, light emitted from the lamps 10 is transmitted through the light guide plate 11, is guided to the front by the reflection sheet 12, and is uniformly diffused by the diffusion plate 13 in front of the light guide plate 11, so that the LCD panel 15 has uniform brightness throughout.
  • the transparent frame 2 spaced apart from the LCD panel 15 is attached to the rear circumference of the transparent plate 1.
  • the transparent frame 2 and the transparent plate 1 are tightly bonded to each other, for example, using UV transparent adhesive, as is well-known in the art.
  • the curing UV transparent adhesive is applied on the rear face of the transparent plate 1, one face of the transparent frame 2 or matching faces of the transparent plate 1 and the transparent frame 2, and UV rays are radiated to bonding portions thereof, so that the UV transparent adhesive is cured, thereby tightly bonding the transparent plate 1 and the transparent frame 2.
  • the shielding pattern 3 is printed on the rear face of the transparent plate 1, corresponding to the inner lateral face of the transparent frame 2 and the outer lateral face of the LCD panel 15, which are bonded to each other as mentioned above, in order to prevent the interior from being exposed.
  • the shielding pattern 3 may be configured as a mirror pattern made of Pt in order to provide a more elegant design to the front.
  • the shielding pattern 3 may be provided by applying opaque ink or attaching a sheet printed with an opaque material on the rear face of the transparent plate 1.
  • the light emitting means 6 includes the LEDs 18, which are continuously attached to the surface of the bar-shaped support block 17. When the LEDs 18 are turned on in response to an electric voltage applied thereto, light from the LEDs 18 is radiated forwards, through the transparent frame 2, to the transparent plate 1 and the edges thereof.
  • the color pattern 4 which is opaque, is formed on the entire rear face of the transparent frame 2, so that, when the light emitting means 6 is turned on, light does not project backwards, but projects only forwards and sideways.
  • the entire circumference of the transparent plate 1, corresponding to the transparent frame 2 brightens with the color of the color pattern 4.
  • the color pattern 4 may be formed by applying colored ink or attaching a colored sheet.
  • the separate color filter 16 is attached to one face of the diffusion filter 5
  • light from the LEDs 18 passes through the color filter 16, thereby brightening with the color of the color filter 16.
  • the color filter 16, having the same color as the color pattern 4 can increase the saturation and brightness of the color pattern 4 when the light emitting means 6 is turned on.
  • the color filter 16 has a different color from the color pattern 4 only the color of the color pattern 4 is seen when the light emitting means 6 is turned off.
  • the transparent frame has different apparent colors according to whether the light emitting means 6 is turned on or off.
  • an SM type chip LED which is color-variable, can be used to express various colors from its own light.
  • the LEDs 180 may be arranged in the form of a belt along the inner circumference of the transparent frame 2, at an interval of about 1 to 2cm, so that fantastic color combinations can be expressed, through systematic color changes of the LEDs, as if color images were moving.
  • the color filter 16 may be added to the diffusion filter 5 in order to provide more fantastic and novel color expressions.
  • separate ornamental moldings 19 are provided, through insert molding, across lateral ends and rear faces of the transparent plate 1 and the transparent frame 2.
  • the ornamental moldings 19 cause the corresponding portions to be opaque, so that the color impression is expressed only in front of the transparent plate 1.
  • the ornamental moldings 19 can be formed by acrylonitrile-butadiene-styrene (ABS) injection molding, or can be manufactured using an aluminum (Al) frame, alumite corrosion, aluminum diamond cutting, and so on.
  • an ornamental pattern 7 having various engraved depressions is formed on the rear face of the transparent frame 2.
  • the engraved depressions express the ornamental pattern 7 so that it is prominent.
  • the LCD module of the present invention also includes the separate chassis unit 20 mounted on the rear part thereof.
  • the separate chassis unit 20 can securely bind inside components and conceal rear corners, thereby producing a more complete LCD module.
  • FIGS. 7 to 10 show various examples to which the LCD module of the present invention is applied. As shown in FIGS. 7 to 10, various colors can be seen or radiated through the edges of computer monitors, and the transparent plate 1 and the transparent frame 2 can be machined to have various shapes. Accordingly, visual effects and interior effects can be improved through the modification and improvement of the overall design.
  • the present invention can be utilized as a mood lamp having attractive light.
  • the edges of the transparent plate 1 When used at night, it is possible for the edges of the transparent plate 1 to light the surrounding area even in the state in which indoor lamps are turned off. This makes it possible to decrease the difference in brightness between the interior of a room and the LCD panel 15, thereby contributing to protecting the vision of a user.
  • the LCD module of the present invention can be used in various industrial fields, and particularly, can be used as a display module for various devices, such as a computer monitor, a television, a mobile phone, a navigator, a PMP, a PDP, a PSP and so on.
  • the LCD module of the present invention is applicable to all home appliances and portable multimedia devices that have a display module.
  • the above-described LCD module having a direct view color-light emitting frame according to the present invention which is used for various display devices, can provide a transparent portion having various colors in the edge of the display devices, thereby having an excellent ornamental effect.
  • the light emitting means When the light emitting means is turned on, light from the light emitting means projects forwards through the transparent frame, thereby providing a more beautiful and elegant outer appearance.
  • the LCD module of the present invention can also be used as a mood lamp that radiates attractive light.
  • the present invention makes it possible to break from conventional cases having a monotonous design and color in order to satisfy various demands of consumers. Since a high level of production is expected, excellent competitiveness can be ensured in the field of the present invention and other fields related to the present invention.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

An LCD module includes, in the front portion thereof, a transparent plate having various end shapes and an increased width. A shielding pattern and a transparent frame are provided behind the transparent plate so as not to interfere with an LCD panel. A separate light emitting means, which faces outwards, is provided inside the transparent frame, and a color pattern is printed on the rear face of the transparent frame. The transparent plate protects the surface of the LCD module, and the transparent frame provides a transparent portion in the outer portion of the LCD module, so that a user can selectively generate a desired color. When the light emitting means is turned on, light projects forwards through the transparent frame. At night, the LCD module can be used as a mood lamp radiating attractive light.

Description

[DESCRIPTION] [Invention Title]
LCD MODULE WITH COLOR-LIGHT-EMITTING FRAME [Technical Field]
The present invention relates to a liquid crystal display (LCD) module that is used as a display for a computer monitor, a television, a mobile phone, a navigator, a PMP, a PDP, a PSP and the like. More particularly, the present invention relates to an LCD module including a direct view chromatic light emitting frame, which has various shapes and colors, and is provided around the perimeter of the LCD module, with a color pattern printed on the frame, so that a user can selectively use a display having a desirable edge color according to his/her preference, in which the entire outer portion of the LCD panel brightens when the frame emits light, thereby improving the saturation and brightness of the color pattern, in which the color of the color pattern mixes with the color of light from light emitting means, thereby realizing a new color, and which provides an attractive mood lamp funct ion at night . [Background Art]
According to recent trends, various display devices are manufactured using LCDs in order to decrease the thickness thereof. Such display devices using LCDs are widely used in computer monitors, televisions and mobile phone displays.
An LCD is a flat panel display that, unlike conventionally used cathode ray tubes (CRTs), converts various electronic data from various devices into visual data by changing the reflectivity of liquid crystal cells in response to an applied electric field. Such an LCD requires a backlight unit since it does not produce light of its own. However, LCDs are widely used owing to merits such as low power consumption and good portability.
The LCDs are generally divided into a super-twisted nematic LCD (STN- LCD), a thin film transistor LCD (TFT-LCD), an ultra fine and bright LCD (UFB-LCD), a thin film diode LCD (TFD-LCD), an organic electro-luminescent (EL) display and so on. Among these displays, the TFT-LCD is generally known to be the most widely used.
In particular, as is widely used in recent times, the TFD-LCD includes a lower glass panel on which thin film transistors and pixel electrodes are arrayed, an upper glass panel on which color filters for expressing colors and common electrodes are arrayed, liquid crystal cells sandwiched between the upper and lower glass panels, and polarizers attached to the faces of the glass panels, the polarizers linearly polarizing natural light (visual light).
The TFT-LCD also includes TFTs, as switching devices, capacitors and auxiliary capacitors, formed by the liquid crystal cells sandwiched between the upper and lower panel electrodes, gate electrodes controlling on/off operations of the TFTs and image signal electrodes. Here, image information is stored in the above-mentioned two types of capacitors.
The TFT-LCD produces a desired image according to the following procedures: A voltage is applied to a TFT gate of a pixel using an outer peripheral circuit, thereby turning on a transistor, so that an image voltage can be inputted into a liquid crystal cell, and then the image voltage is applied to the liquid crystal cell to store image information. Next, the transistor is turned off, enabling charges stored in a liquid crystal capacitor and an auxiliary capacitor to be maintained, so that a visual image is displayed for a predetermined time period. Then, a voltage is applied to the liquid crystal cell to change the orientation thereof, and light passes through and is diffracted by the liquid crystal cell, the orientation of which has changed. Finally, diffracted light is made to pass through a polarizer, thereby producing the desired image. The market size has rapidly expanded since the 1990s, when LCDs were first used, and now LCDs are widely used in various industrial fields.
As is well known in the art, an LCD module using this type of LCD is used in a computer monitor, a television, or a mobile phone display. With reference to FIG. 1, a description will be made of a conventional LCD module, which is housed in a chassis or an outer case 100. In general, the LCD module includes a light guide plate 102 having a backlight lamp 101, a reflection sheet 103 and a diffusion sheet 104 attached to both faces of the light guide plate 102, and an LCD panel 106 placed in front of the diffusion sheet 104, the LCD panel 106 having a drive circuit unit 105.
The outer case 100, finishing the contour of the LCD module, is formed by injection molding synthetic resin or extruding metal. A separate protective sheet 107 is mounted on the front face of the LCD panel 106, and is closely attached to the inner portion of the outer case 100.
Here, the LCD panel 106 outputs an external signal, which is inputted into the drive circuit unit 105. At the same time, when the backlight lamp 101 is turned on, the LCD module outputs various colors due to the reflection of light by the reflection sheet 103 and the diffusion and distribution of light by the diffusion sheet 104, thereby expressing a desired image.
In the aforementioned LCD module, however, the case finishing the edges, such as the light guide plate, the reflection sheet and the diffusion sheet, is made of synthetic resin. Particularly, the case is formed by molding synthetic resin along the contour of the LCD module into a box-shaped configuration. Thus, the manufacture of the LCD module is limited to very simple designs.
While the advantageous properties of synthetic resin make it possible to express various colors and feelings of material through surface treatment thereof, only cases having typical shapes and colors are manufactured and distributed, thereby failing to satisfy various tastes of consumers. Furthermore, monotonous feelings and inferior shapes of the case surrounding the contour of the LCD module severely limit the design.
A product having this type of LCD module is not inconvenient to use during the daytime. However, at night, the high brightness of the LCD panel causes the surrounding areas to look darker. Thus, inconveniently, it is necessary to turn on a lamp when the LCD module is being used. A great difference in the brightness between the surroundings and the LCD panel also has a significantly adverse effect on the vision of a user or a viewer.
While common consumers and purchasers have unique personalities and tastes, the LCD modules distributed have monotonous contour designs and stereotyped colors, thereby failing to provide options to the consumers. Young people or those consumers who have strong personalities attach various stickers, sheets or ornaments to the surface of the case. However, this also requires additional expenses, or stains the surface of the product or causes contamination when used for a long time, thereby reducing the lifetime of the product .
[Disclosure]
[Technical Problem]
The present invention is directed to provide an LCD module having a direct view chromatic light emitting frame, which improves the ornamental effect of an LCD display having a stereotyped box-shaped frame and the function of the LCD display as a decorative interior article, and enables the LCD display to be imparted with various contour designs in order to satisfy individual tastes. Furthermore, the LCD module of the present invention is not limited to the contour change or the ornamental effect, but can be combined with a transparent frame emitting various colors, thereby protecting the vision of a user at night and serving as a mood lamp.
[Technica1 So1ut ion]
The LCD module of the present invention includes, in the front portion thereof, a transparent plate having various end shapes and an increased width. A shielding pattern and a transparent frame are provided in the rear of the transparent plate so as not to interfere with an LCD panel. Furthermore, a separate light emitting means, which faces outside, is provided inside the transparent frame, and a color pattern is printed on the rear face of the transparent frame.
[Advantageous Effects]
According to the present invention as set forth above, the transparent plate protects the surface of the LCD module, and the transparent frame on the rear edges of the transparent plate provides a transparent portion having various colors in the outer portion of the LCD module, so that a user can selectively use a preferable color. When the light emitting means is turned on, light from the light emitting means projects forwards through the transparent frame, thereby providing a more beautiful and elegant outer appearance. At night, the LCD module of the present invention can also be used as a mood lamp radiating attractive light. The present invention makes it possible to break from conventional cases having a monotonous design and color in order to credibly satisfy various demands of consumers. Accordingly, a high rate of production can be achieved, and thus excellent competitiveness can be ensured. [Description of Drawings]
FIG. 1 is a cross-sectional view illustrating the overall structure of a conventional LCD module;
FIG. 2 is an exploded perspective view illustrating an LCD module according to the present invention!
FIG. 3 is a cross-sectional view illustrating the overall structure of the LCD module according to the present invention;
FIG. 4 is an enlarged view of the cross section of the LCD module according to the present invention;
FIG. 5 is a view illustrating another embodiment of the LCD module according to the present invention;
FIG. 6 is a view illustrating a further embodiment of the LCD module according to the present invention;
FIG. 7 is a view illustrating a monitor having a monochromatic light emitting frame, as an example to which the LCD module of the present invention is applied;
FIG. 8 is a view illustrating a monitor having a polychromatic light emitting frame, as an example to which the LCD module of the present invention is applied;
FIG. 9 is a view illustrating a monitor having a light emitting frame in which a color pattern and a transparent portion are mixed, as an example to which the LCD module of the present invention is applied; and
FIG. 10 is a view illustrating a monitor having a horizontal polychromatic light emitting frame as an example to which the LCD module of the present invention is applied.
<Major Reference Numerals of the Drawings>
1: transparent plate 2: transparent frame
3: shielding pattern 4: color pattern
5: diffusion filter 6: light emitting means
7: ornamental pattern 10: backlight lamp
11: light guide plate 12: reflection sheet
13: diffusion sheet 14: drive circuit unit
15: LCD panel 16: color filter
17: support block 18: LED
19: ornamental molding 20: chassis unit [Best Mode]
The terminologies or words used in the description and the claims of the present invention should not be interpreted as being limited merely to common and dictionary meanings. On the contrary, they should be interpreted based on the meanings and concepts of the invention in compliance with the scope of the invention on the basis of the principle that the inventor(s) can appropriately define the terms in order to describe the invention in the best way.
FIG. 2 is an exploded perspective view illustrating an LCD module according to the present invention, and FIG. 3 is a cross-sectional view illustrating the overall structure of the LCD module according to the present invent ion.
In the present invention, a separate transparent plate 1 extends beyond the circumference of an LCD panel 15 having drive circuit units 14, and light emitting means 6 is provided on the rear face of the transparent plate 1 to generate light when turned on, so that light from the light emitting means 6 projects to the front of the transparent plate 1.
Behind the LCD panel 15, a light guide plate 11 having backlight lamps 10 is provided, and a reflection sheet 12 and a diffusion sheet 13 are provided on both sides of the light guide plate 11.
The transparent plate 1 is closely attached to the entire front face of the LCD panel 15, and a transparent frame 2 is provided on the rear circumference of the transparent plate 1 and is spaced apart from the LCD panel 15.
A shielding pattern 3 is printed on the rear face of the transparent plate 1, between the outer lateral face of the LCD panel 15 and the inner lateral face of the transparent frame 2, in order to conceal the drive circuit units 14 and the light emitting means 6.
The shielding pattern 3 is formed, for example, by applying a mirror layer made of platinum (Pt) or attaching a sheet printed with an opaque material. A chassis unit 20, which closes the rear face of the transparent frame 2 and the rear end of the LCD panel 15, is coupled to the module.
A color pattern 4 is formed on the rear face of the transparent frame 2. In detail, the color pattern 4 is formed by applying colored ink on the transparent frame 2 or attaching a colored sheet to the surface of the transparent frame 2. A diffusion filter 5 and a color filter 16 are separately or sequentially attached to the inner lateral face of the transparent frame 2.
The light emitting means 6 includes LEDs 18, attached to the surface of a support block 17 on the rear face of the transparent plate 1, in which each of the LEDs 18 has a light emitting portion facing the outside of the LCD panel 15. Ornamental moldings 19 are coupled, as finishing members, to side and rear portions of the transparent plate 1. [Mode for Invention]
Now, the operation and the structure of the above-described LCD module having a direct view chromatic light emitting frame according to the present invention will be described in greater detail with reference to the accompanying drawings.
Referring to FIG. 4, in the LCD module of the present invention, the panel-type transparent plate 1 made of a transparent material is provided in front of the LCD panel 15, which has the drive circuit units 14 on both sides. The central portion of the transparent plate 1 allows an image from the LCD panel 15 to pass therethrough, and an opaque portion is provided on a portion of the transparent plate 1 corresponding to the circumference of the LCD panel 15 in order to shield the drive circuit units 14 and the light emitting means 6 therein. A transparent portion is also formed in the outermost portion of the transparent plate 1, so that light from the light emitting means 6 therein passes through the transparent portion to the front.
The light guide plate 11, which has the reflection sheet 12 and the diffusion sheet 13 on both sides thereof, is provided on the rear face of the LCD panel 15. When the backlight lamps 10 on one side or both sides of the light guide plate 11 are turned on, light emitted from the lamps 10 is transmitted through the light guide plate 11, is guided to the front by the reflection sheet 12, and is uniformly diffused by the diffusion plate 13 in front of the light guide plate 11, so that the LCD panel 15 has uniform brightness throughout.
The transparent frame 2 spaced apart from the LCD panel 15 is attached to the rear circumference of the transparent plate 1. The transparent frame 2 and the transparent plate 1 are tightly bonded to each other, for example, using UV transparent adhesive, as is well-known in the art. Particularly, the curing UV transparent adhesive is applied on the rear face of the transparent plate 1, one face of the transparent frame 2 or matching faces of the transparent plate 1 and the transparent frame 2, and UV rays are radiated to bonding portions thereof, so that the UV transparent adhesive is cured, thereby tightly bonding the transparent plate 1 and the transparent frame 2.
The shielding pattern 3 is printed on the rear face of the transparent plate 1, corresponding to the inner lateral face of the transparent frame 2 and the outer lateral face of the LCD panel 15, which are bonded to each other as mentioned above, in order to prevent the interior from being exposed. The shielding pattern 3 may be configured as a mirror pattern made of Pt in order to provide a more elegant design to the front. Alternatively, the shielding pattern 3 may be provided by applying opaque ink or attaching a sheet printed with an opaque material on the rear face of the transparent plate 1.
The light emitting means 6, which faces the transparent plate 2, is provided on the inner lateral face of the transparent plate 2. The light emitting means 6 includes the LEDs 18, which are continuously attached to the surface of the bar-shaped support block 17. When the LEDs 18 are turned on in response to an electric voltage applied thereto, light from the LEDs 18 is radiated forwards, through the transparent frame 2, to the transparent plate 1 and the edges thereof.
In particular, the color pattern 4, which is opaque, is formed on the entire rear face of the transparent frame 2, so that, when the light emitting means 6 is turned on, light does not project backwards, but projects only forwards and sideways. With the color pattern 4, the entire circumference of the transparent plate 1, corresponding to the transparent frame 2, brightens with the color of the color pattern 4.
Here, the color pattern 4 may be formed by applying colored ink or attaching a colored sheet.
In the case where the separate diffusion filter 5 is attached to the inner lateral face of the transparent frame 2, light from the LEDs 18 is uniformly diffused and distributed by the diffusion filter 5 and projects with generally uniform brightness, thereby making it possible to produce smoother and more elegant lighting effects.
In the case where the separate color filter 16 is attached to one face of the diffusion filter 5, light from the LEDs 18 passes through the color filter 16, thereby brightening with the color of the color filter 16. The color filter 16, having the same color as the color pattern 4, can increase the saturation and brightness of the color pattern 4 when the light emitting means 6 is turned on. Conversely, in the case where the color filter 16 has a different color from the color pattern 4, only the color of the color pattern 4 is seen when the light emitting means 6 is turned off. When the light emitting means 6 is turned on, the color of the color filter 16 is mixed with the color of the color pattern 16, thereby producing a different apparent color. Accordingly, the transparent frame has different apparent colors according to whether the light emitting means 6 is turned on or off.
It is also possible to provide ornamental lighting using only the light of the LEDs 18 without using the color filter 16. Particularly, an SM type chip LED, which is color-variable, can be used to express various colors from its own light. Here, the LEDs 180 may be arranged in the form of a belt along the inner circumference of the transparent frame 2, at an interval of about 1 to 2cm, so that fantastic color combinations can be expressed, through systematic color changes of the LEDs, as if color images were moving.
In addition to the color expression using the color variability of the LEDs, the color filter 16 may be added to the diffusion filter 5 in order to provide more fantastic and marvelous color expressions.
As shown in FIG. 5, separate ornamental moldings 19 are provided, through insert molding, across lateral ends and rear faces of the transparent plate 1 and the transparent frame 2. The ornamental moldings 19 cause the corresponding portions to be opaque, so that the color impression is expressed only in front of the transparent plate 1. The ornamental moldings 19 can be formed by acrylonitrile-butadiene-styrene (ABS) injection molding, or can be manufactured using an aluminum (Al) frame, alumite corrosion, aluminum diamond cutting, and so on.
In particular, as shown in FIG. 6, an ornamental pattern 7 having various engraved depressions is formed on the rear face of the transparent frame 2. The engraved depressions express the ornamental pattern 7 so that it is prominent. When the light emitting means 6 on the side of the ornamental pattern 7 is turned on, light therefrom refracts on the ornamental pattern 7, thereby expressing the ornamental pattern 7 so that it is more bri 11 iant .
The LCD module of the present invention also includes the separate chassis unit 20 mounted on the rear part thereof. The separate chassis unit 20 can securely bind inside components and conceal rear corners, thereby producing a more complete LCD module.
FIGS. 7 to 10 show various examples to which the LCD module of the present invention is applied. As shown in FIGS. 7 to 10, various colors can be seen or radiated through the edges of computer monitors, and the transparent plate 1 and the transparent frame 2 can be machined to have various shapes. Accordingly, visual effects and interior effects can be improved through the modification and improvement of the overall design.
When the light emitting means 6 is turned on, as mentioned above, a lighting effect as if all the edges of the transparent plate 1 were lit can be produced. Thus, the present invention can be utilized as a mood lamp having attractive light. When used at night, it is possible for the edges of the transparent plate 1 to light the surrounding area even in the state in which indoor lamps are turned off. This makes it possible to decrease the difference in brightness between the interior of a room and the LCD panel 15, thereby contributing to protecting the vision of a user.
As is well known, the LCD module of the present invention can be used in various industrial fields, and particularly, can be used as a display module for various devices, such as a computer monitor, a television, a mobile phone, a navigator, a PMP, a PDP, a PSP and so on. The LCD module of the present invention is applicable to all home appliances and portable multimedia devices that have a display module.
While the present invention has been shown and described in connection with the exemplary embodiments and the illustrative drawings, the scope of the present invention is not limited thereby. Rather, it is to be understood that various substitutes and equivalents to the embodiments are possible, without departing from the scope and spirit of the present invention. [Industrial Applicability] The above-described LCD module having a direct view color-light emitting frame according to the present invention, which is used for various display devices, can provide a transparent portion having various colors in the edge of the display devices, thereby having an excellent ornamental effect. When the light emitting means is turned on, light from the light emitting means projects forwards through the transparent frame, thereby providing a more beautiful and elegant outer appearance. At night, the LCD module of the present invention can also be used as a mood lamp that radiates attractive light. The present invention makes it possible to break from conventional cases having a monotonous design and color in order to satisfy various demands of consumers. Since a high level of production is expected, excellent competitiveness can be ensured in the field of the present invention and other fields related to the present invention.

Claims

[CLAIMS] [Claim 1]
A liquid crystal display module, wherein a separate transparent plate (1) is expanded beyond edges of a liquid crystal display panel (15) having drive circuit units (14), so that various colors project forwards through an extended portion of the transparent plate (1) except for the liquid crystal display panel (15); wherein light emitting means (6) is provided on a rear face of the transparent plate (1) to generate light when turned on, so that light from the light emitting means (6) projects through the expanded portion of the transparent plate (1) except for the liquid crystal display panel (15), a light guide plate (11) having backlight lamps (10) is provided behind the liquid crystal display panel (15), and a reflection sheet (12) and a diffusion sheet (13) are provided on respective sides of the light guide plate (11); wherein the transparent plate (1) is closely attached to an entire front face of the liquid crystal display panel (15), and a transparent frame (2) is provided on rear edges of the transparent plate (1), spaced apart from the liquid crystal display panel (15); and wherein a shielding pattern (3) is printed on the rear face of the transparent plate (1), between an outer lateral face of the liquid crystal display panel (15) and an inner lateral face of the transparent frame (2), in order to prevent the drive circuit units (14) and the light emitting means (6) from being seen from front. [Claim 2]
The liquid crystal display module according to claim 1, wherein the shielding pattern (3) is formed by applying a mirror print layer made of platinum on the rear face of the transparent plate (1). [Claim 3]
The liquid crystal display module according to claim 1, wherein the shielding pattern (3) is formed by attaching a sheet made of an opaque material on the rear face of the transparent plate (1). [Claim 4]
The liquid crystal display module according to claim 1, wherein a separate chassis unit (20) closes a rear face of the transparent frame (2) and a rear end of the LCD panel (15). [Claim 5]
The liquid crystal display module according to claim 1, wherein a color pattern 4 is printed on the rear face of the transparent frame (2). [Claim 6]
The liquid crystal display module according to claim 5, wherein the color pattern (4) is formed by applying colored ink on a surface of the transparent frame (2). [Claim 7]
The liquid crystal display module according to claim 5, wherein the color pattern (4) is formed by attaching a colored sheet on a surface of the transparent frame (2). [Claim 8]
The liquid crystal display module according to claim 1, wherein a diffusion filter (5) is attached to an inner lateral face of the transparent frame (2). [Claim 9]
The liquid crystal display module according to claim 1, wherein a color filter (16) is attached to an inner lateral face of the transparent frame (2). [Claim 10]
The liquid crystal display module according to claim 1, wherein a diffusion filter (5) and a color filter (16) are sequentially attached to an inner lateral face of the transparent frame (2).
PCT/KR2008/001527 2007-04-03 2008-03-18 Lcd module with color-light-emitting frame WO2008120879A1 (en)

Applications Claiming Priority (2)

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KR1020070032668A KR100874163B1 (en) 2007-04-03 2007-04-03 LCD module with direct-view color light emitting frame
KR10-2007-0032668 2007-04-03

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CN (1) CN101281323A (en)
WO (1) WO2008120879A1 (en)

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CN101281323A (en) 2008-10-08
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